http://www.carltonbale.com/blog/2006/11/1080p-does-matter/
QuoteThere are a few obvious factors to being able to detect resolution differences: the resolution of the screen, the size of the screen, and the viewing distance. To be able to detect differences between resolutions, the screen must be large enough and you must sit close enough. So the question becomes ?How do I know if need a higher resolution or not??. Here is your answer.
This is something I have been wondering about. Some great in formation if you are in the market for a new display.